6284-46-4

Basic information

• Product Name: CROTONIC ACID ISOPROPYL ESTER
• Synonyms: CROTONIC ACID ISOPROPYL ESTER;ISOPROPYL CROTONATE;2-Butenoic acid, 1-methylethyl ester, (2E)-;isopropyl (E)-but2-enoate;isopropyl (E)-crotonate
• CAS NO: 6284-46-4
• Molecular Formula: C₇H₁₂O₂
• Molecular Weight: 128.17
• Mol File: 6284-46-4.mol
• Article Data: 12

Chemical Properties

• Boiling Point: 147 °C
• Flash Point: 40°C
• Appearance: /
• Density: 0.89
• Vapor Pressure: 5.52mmHg at 25°C
• Refractive Index: 1.4220-1.4250
• Storage Temp.: Sealed in dry,Room Temperature
• CAS DataBase Reference: CROTONIC ACID ISOPROPYL ESTER(CAS DataBase Reference)
• NIST Chemistry Reference: CROTONIC ACID ISOPROPYL ESTER(6284-46-4)
• EPA Substance Registry System: CROTONIC ACID ISOPROPYL ESTER(6284-46-4)

Safety Data

• RIDADR: 3272
• HazardClass: 3
• PackingGroup: III
• Hazardous Substances Data: 6284-46-4(Hazardous Substances Data)

Usage

General Description

Crotonic acid isopropyl ester, also known as isopropyl crotonate, is a chemical compound with the formula C7H12O2. It is a colorless liquid with a fruity odor and is commonly used as a flavor and fragrance ingredient. Isopropyl crotonate is also used as a solvent and intermediate in the production of other chemicals, such as pharmaceuticals and agricultural products. It is a flammable liquid and should be handled with caution due to its potential health hazards, including irritation to the eyes and respiratory system, and skin sensitization. Overall, crotonic acid isopropyl ester is a versatile chemical with various industrial applications.

InChI:InChI=1/C7H12O2/c1-4-5-7(8)9-6(2)3/h4-6H,1-3H3/b5-4+

Upstream product

• 3724-65-0 2-butenoic acid 
• 67-63-0 isopropyl alcohol 
• 107-93-7 (E)-but-2-enoic acid 
• 153854-02-5 (R)-3-acetoxybutyric acid methyl ester 
• 625-35-4 trans-chrotonyl chloride 

Downstream Products

• 56783-10-9 (2R,3S,3aS)-2-Methyl-hexahydro-pyrrolo[1,2-b]isoxazole-3-carboxylic acid methyl ester 
• 56783-10-9 (2R,3S,3aR)-2-Methyl-hexahydro-pyrrolo[1,2-b]isoxazole-3-carboxylic acid methyl ester 
• 141633-06-9 (2R,3S,3aS)-2-Methyl-hexahydro-pyrrolo[1,2-b]isoxazole-3-carboxylic acid isopropyl ester 
• 141633-06-9 (2R,3S,3aR)-2-Methyl-hexahydro-pyrrolo[1,2-b]isoxazole-3-carboxylic acid isopropyl ester 
• 103233-41-6 i-Propyl-dihydro-orsellinat 
• 104937-97-5 5-Benzenesulfonylamino-3-methyl-5-oxo-4-phenyl-pentanoic acid isopropyl ester 
• 137008-15-2 (+)-(6R,7R,SS)-1,2,3,5,6,7-hexahydro-6-<2-(isopropoxycarbonyl)-1-methylethyl>-7-methyl-8-<(4-methylphenyl)sulfinyl>-5-indolizinone 
• 137119-54-1 (-)-(7R,SS)-1,2,3,5,6,7-hexahydro-7-methyl-8-<(4-methylphenyl)sulfinyl>-5-indolizinone 
• 141633-13-8 (2R,3R,3aR)-3-Methyl-octahydro-isoxazolo[2,3-a]azepine-2-carboxylic acid isopropyl ester 
• 141633-13-8 (2R,3R,3aS)-3-Methyl-octahydro-isoxazolo[2,3-a]azepine-2-carboxylic acid isopropyl ester 
• 141633-11-6 (2R,3S,3aS)-2-Methyl-octahydro-isoxazolo[2,3-a]azepine-3-carboxylic acid isopropyl ester 
• 141633-11-6 (2S,3R,3aS)-2-Methyl-octahydro-isoxazolo[2,3-a]azepine-3-carboxylic acid isopropyl ester 
• 30434-64-1 3,4-dimethylcyclopent-2-en-1-one 
• 244104-69-6 (-)-(Ss,7'R)-7'-methyl-8'-[(4-methylphenyl)sulfinyl]-6',7'-dihydrospiro[cyclohexane-1,3'-[1,3]oxazolo[3,4-a]pyridin]-5'(1'H)-one 

Relevant articles and documents

Tetramethylammonium Salts: Highly Selective Catalysts for the Preparation of gem-Dichlorocyclopropanes from Electrophilic Alkenes and Chloroform under Phase-Transfer Catalysis Conditions

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Rational Synthesis of Metallo-Cations Toward Redox- A nd Alkaline-Stable Metallo-Polyelectrolytes

Cations are crucial components in emerging functional polyelectrolytes for a myriad of applications. Rapid development in this area necessitates the exploration of new cations with advanced properties. Herein we describe a combination of computational and experimental design of cobaltocene metallo-cations that have distinct electronic and redox properties. One of the direct outcomes on the first synthesis of a complete set of cation derivatives is to discover highly stable cations, which are further integrated to construct metallo-polyelectrolytes as anion-exchange membranes in solid-state alkaline fuel cells. The device performance of these polyelectrolytes under highly basic and oxidative environments is competitive with many organo-polyelectrolytes.

Multigramme synthesis and asymmetric dihydroxylation of a 4-fluorobut-2E-enoate

Esters of crotonic acid were brominated on a multigramme scale using a free radical procedure. A phase transfer catalysed fluorination transformed these species to the 4-fluorobut-2E-enoates reproducibly and at scale (48-53%, ca. 300 mmol). Asymmetric dihydroxylation reactions were then used to transform the butenoate, ultimately into all four diastereoisomers of a versatile fluorinated C4 building block at high enantiomeric-enrichment. The (DHQ) 2AQN and (DHQD)2AQN ligands described by Sharpless were the most effective. The development and optimisation of a new and facile method for the determination of ee is also described; 19F{1H} spectra recorded in d-chloroform/diisopropyl tartrate showed distinct baseline separated signals for different enantiomers.